I recently upgraded my memory card from a slower 1GB CF card to a 4GB high-speed card. Initially I really saw an improvement in image saving performance - especially with burst. However, after a few weeks of use, I started having issues with bad images that the camera couldn't preview, and now I have images that even my PC can't read. Aside from the unreadable image, I have other images that are either only half or less of an image (and gray for the rest of the frame) or other images... Read more →